<template>
  <div :id="id" :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import * as echarts from "echarts";
import resize from "./mixins/resize";

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: "chart",
    },
    id: {
      type: String,
      default: "chart",
    },
    width: {
      type: String,
      default: "200px",
    },
    height: {
      type: String,
      default: "200px",
    },
  },
  data() {
    return {
      chart: null,
    };
  },
  mounted() {
    this.initChart();
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart.dispose();
    this.chart = null;
  },
  methods: {
    initChart() {
      this.chart = echarts.init(document.getElementById(this.id));

      const xAxisData = [];
      const data = [];
      const data2 = [];
      for (let i = 0; i < 50; i++) {
        xAxisData.push(i);
        data.push((Math.sin(i / 5) * (i / 5 - 10) + i / 6) * 5);
        data2.push((Math.sin(i / 5) * (i / 5 + 10) + i / 6) * 3);
      }
      this.chart.setOption({
        backgroundColor: "#08263a",
        grid: {
          left: "5%",
          right: "5%",
        },
        xAxis: [
          {
            show: false,
            data: xAxisData,
          },
          {
            show: false,
            data: xAxisData,
          },
        ],
        visualMap: {
          show: false,
          min: 0,
          max: 50,
          dimension: 0,
          inRange: {
            color: ["#4a657a", "#308e92", "#b1cfa5", "#f5d69f", "#f5898b", "#ef5055"],
          },
        },
        yAxis: {
          axisLine: {
            show: false,
          },
          axisLabel: {
            textStyle: {
              color: "#4a657a",
            },
          },
          splitLine: {
            show: true,
            lineStyle: {
              color: "#08263f",
            },
          },
          axisTick: {
            show: false,
          },
        },
        series: [
          {
            name: "back",
            type: "bar",
            data: data2,
            z: 1,
            itemStyle: {
              normal: {
                opacity: 0.4,
                barBorderRadius: 5,
                shadowBlur: 3,
                shadowColor: "#111",
              },
            },
          },
          {
            name: "Simulate Shadow",
            type: "line",
            data,
            z: 2,
            showSymbol: false,
            animationDelay: 0,
            animationEasing: "linear",
            animationDuration: 1200,
            lineStyle: {
              normal: {
                color: "transparent",
              },
            },
            areaStyle: {
              normal: {
                color: "#08263a",
                shadowBlur: 50,
                shadowColor: "#000",
              },
            },
          },
          {
            name: "front",
            type: "bar",
            data,
            xAxisIndex: 1,
            z: 3,
            itemStyle: {
              normal: {
                barBorderRadius: 5,
              },
            },
          },
        ],
        animationEasing: "elasticOut",
        animationEasingUpdate: "elasticOut",
        animationDelay(idx) {
          return idx * 20;
        },
        animationDelayUpdate(idx) {
          return idx * 20;
        },
      });
    },
  },
};
</script>
